Foundry-flask.



in. H. DOWNIE. POUNDRY PLASK.

APPLIOATION FILED MAY 7, 1912.

Patented Apr. 7, 191A;

2 SHEETS*SHBET l.

T. H. DOWNIB. I

POUNDBY FLASH. l urmomron rum: MAY 7, mm

@wanted Apr. 7, 1914L 2 BHEETB-SHEET 2.

FOUNLKRY-FLASK.

Specification of Letters Patent.

Patented Apr. Tt, laits..

Application filed May r. 1912. serial No. 695,594.

To all whom, 'it may Concern Be it. known'that l, Tllouas H. Dowxllc, citizen of the United States, residing at San Francisco, in the county of Sanv Francisco and State of California, have invented certain new and useful Improvements ill .Follnclry-Flasls, of which the following is a specication.

This invention relates to improvements in foundry flasks and has for its object the provision ol' a flask which nlay he easily knocked down and secured in a small conlpass when not in use and which nlay he .as easily set up for use and iirlnly secured in its operative position.

.A further object of the invention is to provide a construction hy which the extension oit' the flask to'any desired dimensions may he easily1 aceonlplished.

A further object of the invention is to provide a cross har of novel construction which may he readily secured at any point in the flask, and finally the object otl the invention is to improve generally the con struction of foundry flasks s0 as to increase the efliciency of the saine.

All these stated objects. and such other incidental objects as will hereinafter appear, are obtained in the devices, which will he hereinafter fully set forth, and are illus trated in the accompanying drawings, in whicht* Figure l is a perspective view of a flask constructed in accordance with nly inven tion, showing the same set up for use. Fig. 2 is a side view showing the lnanner et' connecting several sections to extend the llask to any degree. F ig'. 3 is a perspective View of one of the sections detached. Fig. 4 is a detail sectional view on the line #l-lll'o'f Fig.Y

2 showing` the lnanner of connectingv several sectionstogether. Fig. 5 is a detail view of the locking pill employed to secure the sections together. Fig.' 6 is a detail sectional view showing the manner of securing,r the cross har in position. Fig. 7 is a detail perspective view showing the construction of the end of the cross har. Fig. S is a detail view of a clip which may be applied to the sect ions when the saule are Inade ot wood. Fig. t) is a detail view showing the said clip .applied to a section.

In carrying out luy invention. employ a plurality ot' side lnelnhers or sections each consisting ot' a hase, wall or plate l. 'trein the edges of which flanges 9/ project outwardly.

The hase or plate l is generally oli an oblong' forni and at one end is provided with an extension or tong-ne 8 and at. the op- -posite end with a corresjlondingf recess or notch Ll, the flanges :following the outline of the edges of the plate and collsequentlv dclininf;l the said notch and the said tongue, as will he readilyunderstood on reference to Fig. In the llangres 2, at the sides ot the notch il, are grooves or recesses 5 and upon the outer 'faces of the said flanges, at the sides ot' the tongues 3, are rihs f'ivwhich are adapted to engage said grooves 5 in the adjacent section when the .sections are arra need to torni an extended flask. The width ol? the tongue and the width of the notch should he suhstal'ltiallv equal, so that when the sections are disposed at a right anule to cach other, the tongue will project through the recess or notch ot' the nieeting section, and the rills 6 will then lit against the edges oi the llannjes 2 at the sides ot the notch 4- and extend across the ends of the `grooves 5. as shown in Fig. l.

At regular intervals throughout the hase or plate l. l torni slots '7 which are tornled hy horillgr through the plate intersectiune` circular openings. so that the slots will have round ends with opposed teeth or projeo tions 8 between the said ends. Similar slots are formed in the flanges 2 at: the ends of the tongues and the not-caes as shown at 9, these slots 9 heiner so located that their lower walls will lie in the plane ot the ifa .2 of the plate l, so that a 't'asteningr ke)v infiel-ted therethrough will hea r against the said plate. Slots 1 0. .similar in all respects to the slot?,l 9, are formed through the flanges 2 at the of the tongues 3 and notches 4 to tikev receive fastening pins. ln the outer side faces ot the tlang'es extending alone' the Iside edges of the sections, l lolln grooves ll which ha vc their walls overhane'inn'. so that lvhclrthc sections are placed together with th'e'gror-lves l1 ot adjacent sections register ingr. the registering `grooves will tforln slots ofthe .saine outline as the slots 7. 9 and l0, as will he readily unl'lerstood on reference to Fig. Q. To reinforce the flanges at the points where these grroovesalf'c formed thcrethrough. l provide hosses orotlgsets l2 on the inner faces of the llangifes in the planes of the said grooves and similar otl'xets, 12u hridge the grooves as clearly shown. l

To secure adjacent or meeting sections together, I employ a lockingpin, shown in detail in Fig. 5, said pin 13 consisting of a wedge having longitudinal grooves 14 disposed centrally in its opposite faces between its converging sides, which sides are convex whereby the cross section of the wedge or locking pin will have the same outline as the slots in the sections i* Vwhich they are engaged and it will be understood, of course, that the longitudinal Walls of the slots and grooves converge in the same degree that the pin tapers. At the wider end ot the locking pins are openings 15, which may be engaged by any suitable withdrawing implement when it is desired to knock down the ask, or for any other reason itI is necessary to withdraw the pins.

The cross bar 16 is in the form of an oblong plate having slots 17 formed therethrough at regular intervals throughout its' extent, said slots heilig of the same form as the slots 7 9 and 10 in the sections, as shown. The ends of the cross bar are constructed with series of longitudinal tapered tongues 18, provided on their side edges with ribs 19, the said tongues being spaced apart at intervals equal to the intervals between adjacent slots in the bases of the sections, so that wedges or locking pins ma be inserted through the slots 7 in the sections to engage between the said tongues and thereby secure the cross bar in position. The cross bar, it will be readily seen, may be secured at any point, either longitudinally or transversely, of the llask and one or more may be employed accordingI to the exigencies of the work being done.

The sections will preferably be made of metal, as the re uisite strength can be there-` by attained wit lout great bulk, but it may sometimes be advantageous to employ wood as the material of which the sections are made, and, in such event,l I prefer to utilize the clip shown in Figs. 8a-nd 9, consistin of a metal plate 20 having a transverse o set 21 at its center on one side and provided in its opposite side, in the same transverse plane as said offset, with a groove 22 having its edges overhanging, as clearly shown. These clips will be secured in the flanges 2 of the sections so that the outer faces of the clips andfthellanges will be Hush, and the grooves 22 will" receive, the locking pins in the same manner as the rooves 11 receive the same,

so that the wearing away of the side walls of no ch, so as to maintain the relative positio s of the sections. and the sections are the grooves will be obviated andthe life of then secured together by driving wedges or locking pins 13 through the slots formed in the flanges at the end of the tongue and at the end ot' the plate extending from the sides ot' the notch to theside edges of the plate. The sections will thus be locked together so that displacement and disengage ment thereof cannot occur and the founding operations may be performed without any fear of the flask collapsing and permitting the molten metal to escape. The cross bars or boards 16 are set up on edge betweenV parallel sections with the tapered tongues 1S bridging the slots in the bases of the sections, and locking pins or wedges are then inserted through said s'lots between the said tongues, so as to engage the same and bind i between them so that the cross bars will be firmly secured in place.

My improved device is exceedingly'simple in its construction and may, obviously, be set up or knocked down' within a. lfew'min- .utes` The tias-lr may be made of any desired size by placing the sections end to end with the tongue on one section filling the notchy in the meeting section and the ribs 6 ,engaging the grooves 5, as shown lin Fig. Q. Locking pins or wedges are then inserted through the registering slots in the flanges of the sections to lockthe sections against transverse displacement and through the registering grooves 11 to lock them against longitudinal displacement. The engaging tongues and notches form eilicient aids in assembling the sections and holding them in their relative positions until the4 locking v pins are driven home,

Having thus described my invention, what I claim as new, is 1. A llask composed of sections yeach having a tongue projecting from one end edge and provided at its opposite end with a notch opening through both side :faces of the section whereby any two sections may be fitted 11o together in alinement with the tongue of one section ittin in the notch ot a meeting section or may e laced at right angles with the-'tongue o? -one section passing transversely through the notelrxof the meet- 11e 'f ing section. I

2. A flask composed of sections each hav- `ing a tongue at one end provided upon its nipper and lower sides wijth..transverse ribs,

the opposite end of the sect-ion being pro- 12o vided witha notch opening through the opposite side faces of the section and rovided in its upperand lower walls -wit 4transvere recesses whereby two sections maybe fitted together with the tongue bf one sec- 125 tion fitting in the notch of a meeting'section andthe ribs on said tongue vengaging the recesses in the upper and lower? walls of said notch or with the tongue of one section passing transversely through thegnotch of 1.30

meegaan Lezing section andthe ribs on seid tongue `touring against the outer eide fece of the meeting section above end below seid notch.

3. A tiesk composed ot sections eeoh heving n tongue otono end and o. not/oh et the opposite end end provided with external Hongos eround seid'tongues end notches and 'mving slots through .said 4fianges and seid tongues, and tapered ,looking pins adapted to be inserted through thesaid slots to lock the sections together. v l

fi. A iiask composed of sections having iionges on their outer sides ond grooves in the outer faces of seid enges having overhangin' edges, and tapered locking pins adapte to engage the grooves of adjacent iianges to look adjacent' sections together and shaped to Ht snugly in seid grooves.

5. A ask section comprising e, bese heving e, notch at one end and e tongue et the opposite end, and e iiengesdening the side and end edges of the plete, grooves being formed in the outer side of the Hangs et the sides of the notch and ribs being formed on the outer sides of the fiange et the sides of the tongue.

6. A Hash comprising meeting members provided with registering slots having converging weils and having round ends and opposed projections on their sides, und tapered locking keys adopted to poss through said slots to lock the seotions together, said keys hving round edges and longitudinal grooves to engage the projections in the slots.

7.4 A iusk comprising superposed sections having transverse grooves in their upper and lower edges, and locking pins engswing adjacent ,grooves in the meeting edges oiathe sections to secure the sections together.

In testimony whereof I eiiix my signeture in presence of two Witnesses.

THMAS H. DOWN IE. [Le] Witnesses: v

Meent. A. KnoNMiLwn,

WILLIAM Minnen. 

